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3. - Đề kiểm tra 15 phút Tiếng Anh 10 – Unit 4: For a better community
Lớp 10 Tiếng Anh Đề kiểm tra 15 phút Tiếng Anh 10 – Unit 4: For a better community

3. My passion for volunteering to help children __________ during my middle school

years while I ____________ for the summer community service.

A. begin - work

B. began - was working

C. have begun - have worked

D. was beginning - was working